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mptcp: pm: inc RmAddr MIB counter once per RM_ADDR ID
The RmAddr MIB counter is supposed to be incremented once when a valid
RM_ADDR has been received. Before this patch, it could have been
incremented as many times as the number of subflows connected to the
linked address ID, so it could have been 0, 1 or more than 1.
The "RmSubflow" is incremented after a local operation. In this case,
it is normal to tied it with the number of subflows that have been
actually removed.
The "remove invalid addresses" MP Join subtest has been modified to
validate this case. A broadcast IP address is now used instead: the
client will not be able to create a subflow to this address. The
consequence is that when receiving the RM_ADDR with the ID attached to
this broadcast IP address, no subflow linked to this ID will be found.
Fixes: 7a7e52e38a
("mptcp: add RM_ADDR related mibs")
Cc: stable@vger.kernel.org
Co-developed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: YonglongLi <liyonglong@chinatelecom.cn>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240607-upstream-net-20240607-misc-fixes-v1-2-1ab9ddfa3d00@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
parent
8031b58c3a
commit
6a09788c1a
2 changed files with 6 additions and 2 deletions
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@ -814,10 +814,13 @@ static void mptcp_pm_nl_rm_addr_or_subflow(struct mptcp_sock *msk,
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spin_lock_bh(&msk->pm.lock);
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removed = true;
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__MPTCP_INC_STATS(sock_net(sk), rm_type);
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if (rm_type == MPTCP_MIB_RMSUBFLOW)
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__MPTCP_INC_STATS(sock_net(sk), rm_type);
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}
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if (rm_type == MPTCP_MIB_RMSUBFLOW)
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__set_bit(rm_id ? rm_id : msk->mpc_endpoint_id, msk->pm.id_avail_bitmap);
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else if (rm_type == MPTCP_MIB_RMADDR)
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__MPTCP_INC_STATS(sock_net(sk), rm_type);
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if (!removed)
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continue;
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@ -2250,7 +2250,8 @@ remove_tests()
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pm_nl_set_limits $ns1 3 3
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pm_nl_add_endpoint $ns1 10.0.12.1 flags signal
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pm_nl_add_endpoint $ns1 10.0.3.1 flags signal
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pm_nl_add_endpoint $ns1 10.0.14.1 flags signal
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# broadcast IP: no packet for this address will be received on ns1
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pm_nl_add_endpoint $ns1 224.0.0.1 flags signal
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pm_nl_set_limits $ns2 3 3
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addr_nr_ns1=-3 speed=10 \
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run_tests $ns1 $ns2 10.0.1.1
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